Capacitive tactile tile sensor
US8127623B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Sep 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/228
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A capacitive tile tactile sensor is described and includes several groups of individual sensors each controlled by a dedicated IC. Individual sensors are formed by sensing electrodes on one side of the sensor and a single ground electrode on the other side, the ground electrode is separated from the sensing electrodes by a compressible dielectric layer. A single electrical connection between the ground electrode and the sensing electrode layer allows for routing of all electrical connections including individual electrodes and a ground electrode to appropriate ICs within the same layer using conductive ink or other similar techniques. Stand-alone configurations are described as well as those adapted for communicating with outside control means including a personal computer. Arranging groups of sensors in parallel with each other creates a matrix of sensors while arranging them along a single line creates a linear strip sensor. Using off-the-shelf capacitance-sensing ICs to control a limited number of capacitance sensors allows reducing the number of electrical connections to the sensor array and increasing its reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.